| Since the end of 20th century,"informatization" has become a hot word with high frequency in Chinese,and the level of informatization development has also become one of the important signs of modern social and economic development.With the help of,"informatization",it is a meaningful attempt to study and apply the"operationalization"connected modern information technology with water conservancy industry.In the practice of "promoting the modernization of water conservancy by water conservancy informationization",focusing on the regional water resources allocation in the guanzhong water receiving area of Water Diversion Project from Hanjiang to Weihe River,this paper conducted the "operationalization" research on the "core business" of water resource management,namely,balance of supply and demand,and allocating decision-making based on digital water grid.This topic has certain exploration value in theory and practical application.The construction of digital water grid and the research on the operational application based on digital water grid are consistent with the practice direction of " promoting the modernization of water conservancy by water conservancy informationization".How to build a topological digital water grid?How to realize the dynamic allocation of regional water resources by relying on the topological water grid?How will the operational application of regional water resources allocation based on digital water grid be implemented?These problems are the key issues to be discussed and solved in this paper.Based on practicability,this paper conducted the study of the topological digital water grid standardization and operational allocation management The main contents of this paper are as follows:1.Different from the digital water grid of space datamation,the topological digital water grid was proposed and implemented.Based on modern information technology and topological theory,topological elements were generalized and topological relations were established to describe the topological water grid.The topological association matrix was used to store the topological relation of digital water grid.The data storage structure of topological graph in topological water grid was divided into three categories:overview class,attribute class and figure metaclass.The data interaction of topological digital water grid was managed by data flow model.Based on the comprehensive integration platform,the topological water grid was standardized and visualized to realize the flexible construction of the topological digital iwater grid.Taking the water receiving area of Water Diversion Project from Hanjiang to Weihe River as an example,the topological digital water grid of the water receiving area in different level years under the situations of with and without water supply of the Water Diversion Project from Hanjiang to Weihe River were constructed.2.A new operationalization method of connecting traditional water conservancy business with information technology based on topological digital water grid was proposed.Taking component technology as the core,from the perspective of component development,component reuse and component combination in data processing,the granulation of complex calculation was achieved.The topological digital water grid was coupled with the business components and the relationship between the topological digital water grid and the business process was established through the expression of mapping relation.The flow and conversion process of water yield in regional water resources system was organically combined with topological visualization of water resources business process.Through the interaction between topological digital water grid and business process,the process management of complex water resource allocation business was realized.The technology and business were integrated.By quickly modifying the topological water grid,updating the business components,and the mapping relationship between the water grid and the components,it could adapt to the complexity and dynamic change of the business,and could quickly respond to the dynamic needs of the water resource allocation business.3.Based on the topological digital water grid,the operational application of regional water resource supply and demand balance analysis were realized.Based on the water distribution rules,supply and demand balance business of water resources in water receiving area,the business-oriented operationalization of supply and demand balance analysis was carried out based on the topological digital water grid.Based on relevant business components development and basic data collection,a topological and operational application system for the analysis of water supply and demand balance of water resources in the water receiving area of the Water Diversion Project from Hanjiang to Weihe River was established.Water demand forecasts for 2010,2025 and 2030 had been made in detail.The increase and decrease of water sources and water users at different level years,the change of supply and demand relationship had been analyzed.After these dynamic changes of system response,the balance of supply and demand was analyzed.In the operational system of topological digital water grid,complex businesses could be refined and developed deeply.The supply and demand balance analysis of 23 water-receiving objects(taking Baoji city and Meixian county into account)in 2010,2025 and 2030 under the scenario of without the Water Diversion Project from Hanjiang to Weihe River were realized.In 2010,the total water demand was 1.419 billion m3,about 864 million m3 could be supplied by local water supply projects,and 555 million m3 was lacked,with a water shortage rate of 39.13%.Total water demand in 2025 would be 2.558 billion m3.Under the scenario of digging local water and making full use of reclaimed water,the available water supply would increase to 1.255 billion m3.The water shortage would increase to 1.303 billion m3 with a water shortage rate of 50.94 percent.In 2030,the total water demand would be 2.921 billion m3.After the balance of supply and demand was calculated,the total water shortage would be 1.629 billion m3,and the degree of water shortage would still be as high as 55.77%.4.Based on the topological digital water grid,the operational applications of the optimal allocation of regional water resources and the optimal selection of schemes were realized.Based on the traditional optimal allocation configuration,the basic research was carried out on modeling and solving.Considering three allocation targets of social,economic and ecological environment,a multi-objective regional water resource allocation model was established.A multi-objective Immune Algorithm with Preference-Based Selection(MOIA-PS)was proposed and a multi-target configuration scheme was get using Nondominated Neighbor Immune Algorithm(NNIA)and MOIA-PS.The combination optimization of scheme sets were carried out by multiple methods as the fuzzy comprehensive evaluation method,the grey relational degree ideal solution evaluation method and the grey relational degree analysis method.Combined with the characteristics of multi-person decision making in the allocation schemes,the group decision feature method was used to weight the evaluation indexes,so that the combination optimization was more reasonable.Under the environment of topological digital water grid,the application of optimal allocation of water resources and the optimal of the schemes could be realized.The optimal allocation plan for 2025 and 2030 were obtained by strengthening the allocation decision-making process.In 2025,the water shortage rate of 21 water-receiving objects would decrease from 47.76%to 0.79%and the water shortage rate would decrease from 53.89%to 3.58%in 2030 after the Water Diversion Proj ect from Hanjiang to Weihe River starting water supply.This would alleviate the pressure of water shortage in the development of guanzhong urban agglomeration. |
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